OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application
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/*' H- H" ^- W) ~0 q7 O
* edma_test.c: P/ y& k3 |3 e% ?/ H4 q
*
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* brief EDMA3 Test Application e) U6 e _, a1 e5 A7 g* P
*
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* This file contains EDMA3 Test code.
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*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE6 Z1 w. G1 v2 y. R6 ^8 o
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or; ?$ j" ^; |6 }" {+ ?& P
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.! ^9 a: |, r; {& ]( y
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty2 F B) N5 H T# v( _8 l1 r( O2 w4 H
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details., w! ]% w8 x+ v5 Q7 K! s1 @/ q
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#include <linux/module.h>6 r$ }& Z8 k( v$ W
#include <linux/init.h>0 ]! P3 b# C* K, l+ b
#include <linux/errno.h>) [# d4 a0 a# B
#include <linux/types.h>
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#include <linux/interrupt.h>+ S( w& O. |+ f" r7 L
#include <asm/io.h>1 H4 B4 [5 K) i f/ F I2 G
#include <linux/moduleparam.h>! A9 G7 p/ O; N
#include <linux/sysctl.h>
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#include <linux/mm.h>: s, M d0 g/ @/ a* X
#include <linux/dma-mapping.h>6 g5 D, V! X$ S" a* v3 F0 g3 |- S1 x
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#include <mach/memory.h> @1 M5 i4 |# |
#include <mach/hardware.h># K' e% w, e I/ q! @; n) a: F
#include <mach/irqs.h>+ o j6 P: `0 o9 J+ Y# a) F/ M
#include <asm/hardware/edma.h>1 M* v8 B- |" \) O7 o6 X& B' U( F' q
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/9 W8 w! @% G" r# x/ ^: Y
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#ifdef EDMA3_DEBUG- E7 v1 ~6 b6 r p1 M& u$ E: v4 }) c
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)$ e, i# c, J. M( O) a) o1 T
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)/ }- f$ Y* O% x; R( b) L( O5 Z
#else
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#define DMA_PRINTK( x... ): J; b# j! L: ]# a$ C! U) s# o
#define DMA_FN_IN1 C& D( d- x. [" |3 }: ~" _
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768): w- I$ }8 Q) l. G. i+ W1 c% @
#define STATIC_SHIFT 37 N/ X0 y7 ]( J( N5 k0 A
#define TCINTEN_SHIFT 20% ?/ i, _: j, c: P5 D8 z6 A* F
#define ITCINTEN_SHIFT 21 z/ a3 _" P0 ~) W$ i4 S) ]
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23! i+ k) M1 p& O+ X
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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dma_addr_t dmaphyssrc1 = 0; Y; k# G- e- U; `( A+ j7 ~' C
dma_addr_t dmaphyssrc2 = 0;" K y& o. c% u8 H" V1 E5 _4 J/ p
dma_addr_t dmaphysdest1 = 0;) s1 I: u4 P F* g# L
dma_addr_t dmaphysdest2 = 0;0 K- z+ L' y9 {% v9 K! j3 t9 J: ]
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;: Q) Q( d0 S! K+ O' ]+ t
char *dmabufdest2 = NULL;
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static int acnt = 512;4 ~! F" j/ |# L/ z5 v7 {
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);- A9 y" u: q2 A8 Q6 ^9 ^
module_param(bcnt, int, S_IRUGO);( j4 R, y) |% q+ v
module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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[未解决] OMAPL138如何在Linux下使用EDMA3驱动